How to: Change an Assembly Name (Visual Basic, C#)
The Assembly Name property of an application determines the name that will be used for the compiled application. For example, setting the Assembly Name to "MyApplication" for a Windows-based application would result in an executable file named MyApplication.exe. The Assembly Name defaults to the project name; it can be changed on the Application page of the Project Designer.
Although the default value of the Assembly Name is the same as the project name, the two are unrelated; changing the project name does not change the Assembly Name and changing the Assembly Name does not change the project name.
To change the Assembly Name property
With a project selected in Solution Explorer, on the Project menu, click Properties.
Click the Application tab.
In the Assembly Name field, type the name for your application.